Every 4 to 8 weeks. That’s genuinely how often you should clean your windows if you want them looking properly cared for.

Four-weekly is the gold standard for frames and glass that never get the chance to look anything but freshly cleaned. Eight-weekly still keeps on top of things nicely and gives you a more noticeable difference each visit, without letting anything sit long enough to cause damage.

That last part matters more than people think. We see plenty of first cleans where windows have gone a year or two without attention, and the dirt has sat there long enough to eat into the frames. At that point you’re looking at restoration, or in the worst cases, replacement — a lot more expensive than the cleaning bill you were trying to avoid.

Rain doesn’t do the job for you, either, whatever your neighbour tells you. It just moves the dirt around and leaves mineral spotting behind when it dries.

A few things push the number in either direction. Overhanging trees, a busy road, or anywhere near the coast, and four-weekly makes more sense — sap, dust, and salt build up fast. Sheltered properties away from traffic can often stretch it out further. Interior glass barely gets dirty by comparison, so every 3 to 6 months is usually plenty.

If you’re not sure what your own windows need, we’re happy to take a look and tell you honestly, rather than sign you up to a schedule you don’t need.